Hearing loss

Question 1

Presbycusis

Answer 1

Degenerative hearing loss with age
Loss of neuroepithelial (hair) cells, neurons
High frequency sound more effected than low
Onset is usually associated with chronic noise exposure or vascular disorders
Most common cause of hearing loss worldwide

Question 2

Outer ear

Answer 2

Auricle and ear canal

Question 3

Middle ear

Answer 3

TM, ossicles, middle ear space

Question 4

Inner ear

Answer 4

Cochlea, semicircular canals, internal auditory canals

Question 5

Sensorineural

Answer 5

Involving the inner ear, cochlea, or auditory nerve

Question 6

Conductive

Answer 6

Any cause that limits external sound into the inner ear

Cerumen impaction, middle ear fluid, ossicular chain fixation

Question 7

Otosclerosis

Answer 7

Bony overgrowth of the footplate of the stapes.

No longer function as a piston and becomes fixed